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Method for manufacturing stop collar for pipe fitting device and stop collar

a technology of pipe fittings and stop collars, which is applied in the direction of pipe joints, surface reaction electrolytic coatings, metallic material coating processes, etc., can solve the problems of inability to conduct precise machining, difficult to expect an amount of nut tightening, and danger of leakage, so as to achieve repeatable use and easy assembly

Active Publication Date: 2016-11-03
UNILOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to solve problems in the prior art by providing a method for manufacturing a stop collar for a pipe fitting device that is easy to assemble and repeatable uses. Additionally, the invention provides a method for manufacturing a stop collar with a given color and identification member to easily identify the types of pipes fitted by the pipe fitting device and provide easy maintenance and checking.

Problems solved by technology

At this time, however, it is hard to expect an amount of nut tightening, so that the nuts are loosely or excessively tightened, the pipes are deformed to cause the dangers of leakage.
However, the conventional fitting ring is made through the injection molding, thus making it impossible to conduct precise machining, and besides, it cannot be checked whether fitting nuts are loosely or excessively tightened.
Of course, undesirably, the conventional fitting ring cannot be re-used.

Method used

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  • Method for manufacturing stop collar for pipe fitting device and stop collar
  • Method for manufacturing stop collar for pipe fitting device and stop collar
  • Method for manufacturing stop collar for pipe fitting device and stop collar

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0035]According to the present invention, the stop collar 100 includes the body 120 and the elastic part 200 coupled to the body 120 and having the elastic member 220 made of spring steel.

[0036]According to the first embodiment of the present invention, the body 120 is extruded through an extrusion mold 400. That is, the raw material selected from the group consisting of aluminum or zinc is heated to a temperature in the range of 550 to 650° C. and supplied and molded to the extrusion mold 400.

Molding Step

[0037]The extrusion mold 400 has at least two or more die holes 420 formed thereon, as shown in FIG. 1, and desirably, two die holes 420 are formed on the upper and lower portions of the extrusion mold 400, so that four extrudates are at the same time or selectively obtained upon one time extrusion. On the other hand, each die hole 420 takes a shape of “C”.

[0038]According to the present invention, in more detail, the body 120 of the stop collar 100 takes a shape of “C” on a fitting...

second embodiment

[0066]According to the present invention, the stop collar 100 further includes the identification member 300 coupled to the body 120.

[0067]The identification member 300 has a larger outer diameter than the body 120, and it is coupled to the outer surface of the body 120 in such a manner as to be easily recognized, thus allowing fitting and piping states to be checked by a worker.

[0068]According to the present invention, the identification member 300 is made of a synthetic resin or metal plate and finally manufactured through press machining and injection molding.

[0069]The identification member 300 takes a semicircular shape and includes coupling portions 340 formed on both side end portions thereof in such a manner as to be fitted to the check protrusions 140 of the body 120, an extension piece 320 formed in the middle portion thereof, and holes 322 punched onto the extension piece 320.

[0070]A card or identification tag hangs by the holes 322, and on the card or identification tag, ...

third embodiment

[0081]According to the present invention, as shown in FIGS. 8A and 8B, an elastic force is applied not to the elastic member, but to the body 120, thus achieving easy fastening.

[0082]In this structure, the stop collar has a concave groove portion 220a taking a shape of “V”, square, or semicircle formed on the inner surface of the body 120, and thus, the fitting portion 122 is open and closed around the concave groove portion 220a, thus achieving the fastening to the pipe fitting device 10.

[0083]According to the third embodiment of the present invention, therefore, the stop collar 100 is manufactured by heating the raw material selected from the group consisting of aluminum or zinc to a temperature of 300° C. and extruding the heated raw material through an extrusion mold to have an extrudate having a shape of “C” at the front surface thereof and protrusions formed on the outer surface thereof. At this time, each die hole 420 formed on the extrusion mold 400 has a protruding portion ...

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Abstract

A method for manufacturing a stop collar for a pipe fitting device. A raw material is prepared and heated to a temperature of more than 350° C. The heated raw material is extruded to obtain an extrudate taking a C shape at the front surface thereof and having one or more check protrusions formed on the outer surface thereof. The extrudate is subjected to a solution treatment, cooling treatment, and cutting. An elastic member is prepared from a metal spring steel and folded portions are formed thereon by multi-foaming. The extrudate and the elastic member are coupled to form the stop collar and burrs are removed from the stop collar. The surface of the stop collar are coated with ceramic to provide identification of the pipe use.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a method for manufacturing a stop collar for a pipe fitting device and a stop collar manufactured by the same, and more particularly, to a method for manufacturing a stop collar for a pipe fitting device and a stop collar manufactured by the same wherein a raw material is machined sequentially through extrusion molding, heat treatment, cutting, and grinding, thus enabling a standardized stop collar to be produced in large quantities, and an elastic force is applied to the stop collar, thus providing easy fastening and repeatable uses and further preventing the pipe fitting device and connected pipes by the pipe fitting device from being damaged.[0003]2. Background of the Related Art[0004]Generally, two or more pipes are connected to each other by means of a simple connection part like an elbow or fitting, that is, a pipe fitting device, according to the construction conditions and the en...

Claims

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Application Information

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IPC IPC(8): F16L15/08C22F1/16C21D1/18B24B1/00C21D1/28C23C26/00B21D51/16C22F1/04C21D9/00
CPCF16L15/08C22F1/04C22F1/165C21D1/18B24B1/00C21D1/28C23C26/00B21D51/16C21D9/0068B23P15/00F16L19/00F16L19/062C25D11/04C25D11/16C25D11/34F16L19/08B21C23/14
Inventor YOO, MYOUNG-HO
Owner UNILOK CORP